「河南尉氏县发生重大公共卫生事件，医院诊所人满为患（2026.05.19-21）」5月19日至21日，河南省开封市尉氏县发生重大公共卫生事件，全县城居民大范围出现上吐下泻等中毒症状，学生群体尤为严重。全县各医院人满为患，诊所门口排起长龙。据多名当地网友透露，事件疑因自来水管破裂、污水倒灌所致，全县停水时间已超过24小时。亦有网友认为不排除人为投毒的可能。20日，当地官方媒体发布通报，称已成立调查组，但随即关闭评论区。除此之外，当地政府未见任何实质性救助行动与应对措施。
On May 19–21, a major public health incident struck Weishi County, Kaifeng, Henan Province, with large numbers of residents across the county developing symptoms consistent with poisoning — including vomiting and diarrhea. Students were among the worst affected. Hospitals throughout the county were overwhelmed, and long queues formed outside clinics. According to multiple local residents posting online, the suspected cause is a burst water main that allowed sewage to contaminate the supply, leaving the entire county without running water for more than 24 hours; some online commenters have also raised the possibility of deliberate poisoning. On May 20, local state media announced the formation of an investigation team — then disabled the comments section of the post. Beyond that announcement, no substantive relief measures or emergency response actions have been reported from local authorities.